A tube pushing device, a tube sticking machine and a tube sticking method

Abstract

The application relates to the packaging technical field, in particular to a straw poking device, a straw pasting machine and a straw pasting method. The straw poking device comprises a driving device and a poking device. The driving device drives the poking device to poke a straw located at a first working position of a rotating drum to a packaging container. The poking device comprises a poking finger. The poking finger is rotatably installed on a support through a first rotating shaft. An elastic member is arranged between the poking finger and the support to provide an acting force for the poking finger in the direction of poking the straw to the packaging container. The driving device drives the poking finger to poke the straw to the surface of the packaging container and continuously keeps contact with the straw, so that the straw and the packaging container keep a predetermined pressing time. During the pressing time, the contact surface between the execution end of the poking finger and the straw generates relative movement with the straw in the movement direction of the packaging container. In the scheme, after the straw is poked to the packaging container by the poking finger, the poking finger continuously presses the straw to the packaging container within a predetermined time, so that the strength of the straw pasted to the packaging container is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging technical field, and particularly relates to a straw pushing device, a straw sticking machine and a straw sticking method. BACKGROUND

[0002] For a long time, there have been some machines which apply a drinking straw in a protective envelope of the drinking straw to a packaging container conveyed through the machine. During the application, an adhesive needs to be provided on the wall of the packaging container, and the packaging container needs to be synchronized with the straw application device so that the straw cooperates with the area on which the adhesive is applied on the packaging container, and then the straw is stuck on the packaging container.

[0003] However, since the application device separates from the straw after the straw is pushed to the packaging container, the bonding strength between the straw and the packaging container is reduced, and the risk of the straw being separated from the packaging container during the transportation is increased. SUMMARY

[0004] The present application provides a straw pushing device, and a pushing finger presses the straw on the packaging container for a predetermined time after the straw is pushed to the packaging container, so as to improve the bonding degree between the straw and the packaging container and improve the strength of the straw stuck on the packaging container.

[0005] In order to achieve the above-mentioned purpose, the present application provides a straw pushing device, which comprises a driving device and a pushing device, the driving device is used for driving the pushing device, so as to push a straw located at a first working position of a rotating drum to a packaging container,

[0006] The driving device drives the pushing finger to push the straw to the surface of the packaging container, and the pushing finger keeps in contact with the straw, so that the straw keeps in contact with the packaging container for a predetermined pressing time, and the contact surface of the execution end of the pushing finger and the straw generates relative movement in the movement direction of the packaging container.

[0007] In the straw pushing device, during the process of applying the straw to the packaging container, the driving device drives the bracket installed thereon, the bracket drives the pushing finger installed on the bracket through the first rotating shaft to push the straw located at the first working position of the rotating drum to the adhesive area of the packaging container in transportation, at this time, the elastic member is in a deformed state, the straw is in contact with the pushing finger and the packaging container at the same time for a predetermined time, and the pushing finger generates pressure on the straw in the direction of the packaging container, so as to ensure the stability of the bonding between the straw and the packaging container, and after the pressing is completed, the pushing finger returns to the initial state under the action of the elastic member; at the same time, the pushing finger and the straw have relative movement in the movement direction of the packaging container for a predetermined time, so that the control precision of the driving device and the transportation device for transporting the packaging container can be reduced, and the maintenance cost of the equipment can be reduced.

[0008] Preferably, the toggle device comprises:

[0009] Bracket;

[0010] a finger, the finger being rotatably mounted on the bracket via a first rotating shaft, and an elastic member being provided between the finger and the bracket for providing the finger with a force in a direction of moving the straw toward the packaging container;

[0011] Preferably, the finger includes a connecting end connected to the first rotating shaft; the length of the projection on the horizontal plane of the line connecting the first rotating shaft and the execution end away from the end face of the first rotating shaft is L min -L max ;

[0012] in,

[0013] L min =L o +(v′ f -v′ c )t;

[0014] α=2π / n;

[0015] L o The length of the projection of the line from the first rotating shaft to the first working position on the drum on the horizontal plane;

[0016] R is the radius of the drum;

[0017] e is the depth of the station for transferring straws on the drum;

[0018] n is the number of workstations on the drum;

[0019] V c is the movement speed of the packaging container;

[0020] V f is the movement speed of the finger;

[0021] V′ c V c is the component in the X direction;

[0022] V′ f V f Component in the X direction;

[0023] t is the shortest time the finger needs to press the straw onto the packaging container, which is 150ms-170ms;

[0024] The X direction is the direction of the line connecting the shortest distance between the end face of the execution end and the first rotating shaft within time t.

[0025] Preferably, the connecting end and the executing end are arranged in a Z shape.

[0026] Preferably, the contact surface is formed on the surface of the execution end facing the packaging container, and the contact surface is a plane and parallel to the axis of the first rotating shaft.

[0027] Preferably, the dimension of the contact surface along the first rotation axis direction is smaller than the thickness of the finger along the first rotation axis direction.

[0028] Preferably, the surface roughness Ra value of the contact surface is not greater than 1.6 um.

[0029] Preferably, the bracket includes a frame body for connecting to the driving device, and at least two mounting blocks provided on the frame body;

[0030] Wherein, each of the mounting blocks is provided with a mounting groove for mounting the finger, and the elastic member is provided between the mounting groove and the finger mounted in the mounting groove.

[0031] Preferably, the mounting block is provided with a first mounting hole for passing through the frame, and a threaded hole for fixing the mounting block on the frame, the first mounting hole is connected to the threaded hole, and a bolt passes through the threaded hole and abuts against the frame to fix the mounting block on the frame.

[0032] Preferably, the elastic member is made of polyurethane, and the mounting groove is provided with a second mounting hole for mounting the elastic member;

[0033] Alternatively, the elastic member is a spring.

[0034] Preferably, the driving device comprises:

[0035] A base, a second rotating shaft mounted on the base and rotatable around its own axis;

[0036] an eccentric wheel, wherein the eccentric wheel is mounted on the second rotating shaft, and the axis of the eccentric wheel is parallel to and does not overlap with the axis of the second rotating shaft;

[0037] a mounting seat, the mounting seat being rotatably sleeved on the outer side of the eccentric wheel around the axis of the eccentric wheel, and the mounting seat being used to be connected to the bracket;

[0038] a limiting assembly, the limiting assembly being mounted on the base and being used to cooperate with the mounting seat to limit the movement trajectory of the mounting seat;

[0039] Wherein, the axis of the second rotating shaft is parallel to the axis of the first rotating shaft.

[0040] The present application also provides a tube-sticking machine, comprising the tube-sticking device described above.

[0041] The present application further provides a straw attaching method for moving a straw onto a packaging container by moving an execution end of a moving device;

[0042] The actuating end presses the straw onto the packaging container within a predetermined time, and within the predetermined time, a contact surface between the actuating end and the straw generates relative movement with the straw in the moving direction of the packaging container.

[0043] The tube-sticking method provided in the present application generates relative movement between the actuator end of the shifting device and the straw in the direction of movement of the packaging container, which means that the control accuracy of the shifting device and the conveying device for transporting the packaging container can be lower, thereby reducing the cost of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A top view of a pipe-pulling device according to an embodiment of the present application;

[0045] Figure 2 A top view of a straw-moving device according to an embodiment of the present application, wherein the fingers of the straw-moving device move the straw onto the packaging container;

[0046] Figure 3 A schematic structural diagram of a pipe-pumping device according to an embodiment of the present application;

[0047] Figure 4 This is another structural schematic diagram of a pipe-pumping device according to an embodiment of the present application;

[0048] Figure 5 This is a schematic structural diagram of a pipe-moving device bracket according to an embodiment of the present application;

[0049] Figure 6 This is a structural schematic diagram of a finger of a pipe-moving device according to an embodiment of the present application.

[0050] Icons: 1-sliding device; 11-bracket; 110-frame; 111-mounting block; 12-sliding finger; 120-connecting end; 121-executing end; 122-end face; 123-contact surface; 13-first rotating shaft; 14-elastic member; 2-driving device; 21-base; 22-second rotating shaft; 23-eccentric wheel; 24-mounting seat; 25-limiting assembly; 250-connecting rod; 251-rotating block; 3-packaging container; 4-drum; 41-first workstation. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] The present application provides a straw moving device, comprising a driving device 2 and a moving device 1, wherein the driving device 2 is used to drive the moving device 1 to move the straws located on the first station 41 of the rotating drum 4 to the packaging container 3;

[0053] In which, the driving device 2 drives the finger 12 to move the straw to the surface of the packaging container 3 and maintain continuous contact with the straw, so that the straw and the packaging container 3 are kept in contact for a predetermined time. During the pressing time, the execution end 121 of the finger 12 and the contact surface 123 of the straw generate relative movement between the straw and the movement direction of the packaging container 3.

[0054] In the pipe-moving device of the present application, the straw contacts the finger 12 and the packaging container 3 simultaneously within a predetermined time. After the pressing is completed, the finger 12 returns to its initial state under the action of the elastic member 14. At the same time, within a predetermined time, the contact surface 123 on the finger 12 and the straw move relative to each other in the direction of movement of the packaging container 3. In this way, the control accuracy of the driving device 2 and the transportation device for transporting the packaging container 3 can be reduced, thereby reducing the maintenance cost of the equipment.

[0055] It should be noted that the first workstation 41 refers to the workstation where the finger 12 starts to peel the straw from the drum 4; the contact surface 123 is the end surface of the straw moved by the execution end 121 of the finger 12, and the part that maintains relative movement with the straw in the movement direction of the packaging container 3.

[0056] As an optional embodiment, the shifting device 1 includes: a bracket 11; a shifting finger 12, said shifting finger 12 being rotatably mounted to the bracket 11 via a first rotating shaft 13. An elastic member 14 is disposed between the shifting finger 12 and the bracket 11 for providing a force for the shifting finger 12 to shift the straws toward the packaging container 3. Specifically, during the driving process, the driving device 2 drives the bracket 11 mounted thereon. The bracket 11 drives the shifting finger 12, which is mounted to the bracket 11 via the first rotating shaft 13, to shift the straws located at the first station 41 of the rotating drum 4 toward the bonding area of ​​the packaging container 3 being transported. At this time, the elastic member 14 is in a deformed state, causing the shifting finger 12 to exert pressure on the straws toward the packaging container 3, thereby ensuring a stable bond between the straws and the packaging container 3.

[0057] It should be noted that the arrangement of the elastic member 14 ensures that when the finger 12 and the bracket 11 rotate relative to each other, the contact surface 123 of the actuating end 121 of the finger 12 is as parallel as possible to the surface of the packaging container to be attached to the tube. This allows for a more stable pressing force within a predetermined time, i.e., the relative movement time. As an alternative, the finger 12 includes a connecting end 120 connected to the first rotating shaft 13; the length of the horizontal projection of the line connecting the first rotating shaft 13 and the end surface 122 of the actuating end 121 is L. min -L max ;

[0058] in,

[0059] L min =L o +(v′ f -v′ c )t;

[0060] α=2π / n;

[0061] L o The length of the projection of the line connecting the first rotating shaft 13 of the finger 12 to the first working position 41 on the drum 4 on the horizontal plane;

[0062] R is the radius of the drum 4;

[0063] e is the depth of the station for transferring straws on the drum 4;

[0064] n is the number of stations on the drum 4;

[0065] V c is the moving speed of the packaging container 3;

[0066] V f The movement speed of finger 12;

[0067] V′ c V c is the component in the X direction;

[0068] V′ f V f Component in the X direction;

[0069] t is the shortest time the finger 12 needs to press the straw against the packaging container 3, which is 150ms-170ms;

[0070] The X direction is the direction of the shortest distance between the end surface 122 of the execution end 121 and the first rotating shaft 13 within a time period t.

[0071] In this way, it can be ensured that when the executing end 121 of the finger 12 is peeling the straws on the first station 41 from the rotating drum 4, the end surface 122 of the executing end 121 of the finger 12 will not affect the straws on the next station adjacent to the first station 41, and during the time period when the finger 12 is pressing the straws against the packaging container 3, it can be ensured that the finger 12 is always in contact with the straws and generates relative movement therewith during this period.

[0072] As an alternative, Figure 6 As shown, the connecting end 120 and the executing end 121 are arranged in a Z shape. During the process of moving the straw, the distance between the executing end 121 and the packaging container 3 is smaller than the distance between the connecting end 120 and the packaging container. This ensures that the angle between the contact surface 123 of the executing end 121 and the packaging container 3 to be attached to the straw is relatively small, thereby increasing the time of the contact surface 123 and pressing the straw, and the connecting end 120 will not interfere with other moving packaging containers.

[0073] Alternatively, the contact surface 123 may be formed on the surface of the actuating end 121 . The contact surface 123 is flat and parallel to the axis of the first rotating shaft 13 . This flat surface of the actuating end 121 that contacts the straw prevents significant swinging of the actuating end 121 during movement from the first station 41 to the packaging container 3 . This ensures that the straw adheres to the packaging container 3 in a manner substantially identical to its attachment within the first station 41 . This ensures a sufficient contact area between the straw and the adhesive region on the packaging container 3 , resulting in a better adhesive bond between the two.

[0074] Alternatively, the dimension of the contact surface 123 along the first rotation axis 13 is smaller than the thickness of the finger along the first rotation axis 13. This reduces the contact surface 123 between the actuating end 121 of the finger 12 and the straw, minimizing the contact surface 123 between the actuating end 121 and the adhesive area on the packaging container 3. This reduces friction between the actuating end 121 and the straw, preventing the packaging container 3 from being dragged along during separation and preventing the packaging container 3 from adhering to the contact surface.

[0075] It should be noted that if Figure 5 As shown, the height of the contact surface 123 along the A direction is smaller than the height of the portion of the finger outside the contact surface 123 along the A direction.

[0076] As an alternative, the surface roughness Ra of the contact surface 123 is not greater than 1.6 um. Specifically, within the range of the roughness, the contact surface 123 has a certain friction with the straw, so that in the process of stirring the straw, the straw will not move away from the end surface of the connecting end 120 along the contact surface 123 beyond a preset distance; in addition, the contact surface 123 with the roughness can reduce the area of the contact surface 123, and avoid the adhesive.

[0077] As an alternative, the support 11 includes a frame body 110 for connecting with the driving device 2, and at least two mounting blocks 111 provided on the frame body 110; wherein each mounting block 111 is provided with a mounting groove for mounting the stirring finger 12, and the mounting groove and the stirring finger 12 mounted in the mounting groove are provided with the elastic member 14. In this way, at least two stirring fingers 12 are connected on each frame body 110, and the arrangement of at least two stirring fingers 12 can make the straw more stable from the rotating drum 4 to the packaging container 3 in the process of stirring the straw; at the same time, when there are two stirring fingers 12, due to installation error, the contact surfaces 123 of the two stirring fingers 12 are not in the same plane, and the elastic member 14 compensates for the installation error, and the pressing time and pressing force of the two contact surfaces 123 are as same as possible.

[0078] As an alternative, the mounting block 111 is provided with a first mounting hole for penetrating the frame body 110, and a threaded hole for fixing the mounting block 111 on the frame body 110, the first mounting hole and the threaded hole are in communication, and the bolt penetrates the threaded hole and abuts against the frame body 110 to fix the mounting block 111 on the frame body 110. In the specific assembly process, the mounting block 111 can move relative to the frame body 110 through the first mounting hole to adjust the distance between the two mounting blocks 111, and the mounting block 111 is fixed on the frame body 110 through the threaded hole provided on the mounting hole, thereby improving the convenience of mounting the mounting block 111 on the frame body 110.

[0079] It should be noted that the stirring frequency of the stirring finger is relatively high, generally 18000-24000 times / hour, when the elastic member 14 is a polyurethane column, the elastic coefficient of polyurethane can meet the reliability of the stirring frequency of the stirring finger, so that the elastic member 14 is not easy to be damaged, and is easy to be replaced, thereby reducing the cost. A second mounting hole for mounting the elastic member 14 is provided on the mounting groove; or the elastic member 14 can also be a spring.

[0080] As an optional embodiment, the driving device 2 includes: a base 21, a second rotating shaft 22 mounted on the base 21 and rotatable about its own axis; an eccentric wheel 23, the eccentric wheel 23 being mounted on the second rotating shaft 22, and the axis of the eccentric wheel 23 being parallel to and not overlapping with the axis of the second rotating shaft 22; a mounting seat 24, the mounting seat 24 being rotatable about the axis of the eccentric wheel 23 and sleeved on the outer side of the eccentric wheel 23, and the mounting seat 24 being used to connect to the bracket 11; and a limiting assembly 25, the limiting assembly 25 being mounted on the base 21 and being used to cooperate with the mounting seat 24 to limit the movement trajectory of the mounting seat 24. The axis of the second rotating shaft 22 is parallel to the axis of the first rotating shaft 13. During operation, the second rotating shaft 22 rotates around its own axis to drive the eccentric wheel 23 installed on the second rotating shaft 22 to rotate, and the eccentric wheel 23 can drive the mounting seat 24 to move, thereby driving the bracket 11 to move. Because the axis of the eccentric wheel 23 and the second rotating shaft 22 do not coincide, the axis of the second rotating shaft 22 is parallel to the axis of the first rotating shaft 13, and the limiting assembly 25 is connected to the mounting seat 24, thereby limiting the movement trajectory of the bracket 11, so that the finger 12 on the bracket 11 can move the straw on the rotating drum 4 to the packaging container 3, and after the finger 12 presses the straw, it can move the straw adjacent to the previous straw on the rotating drum 4 to the next packaging container 3.

[0081] It should be noted that the limiting assembly 25 includes a connecting rod 250 and a rotating block 251, wherein: the rotating block 251 can be rotatably installed on the base 21 around an axis parallel to the axis of the second rotating shaft 22, and a through hole is provided on the rotating block 251, and the extension direction of the through hole is perpendicular to the axis of the second rotating shaft 22; the connecting rod 250 can slide through the through hole on the rotating block 251 along the extension direction of the through hole, and one end of the connecting rod 250 is fixedly connected to the mounting seat 24.

[0082] Furthermore, among the connecting rod 250 , the second rotating shaft 22 and the bracket 11 , the second rotating shaft 22 is located between the connecting rod 250 and the bracket 11 .

[0083] The present application also provides a tube-applying machine, comprising the tube-pumping device described above, which produces the same effect as the tube-applying device and will not be described in detail.

[0084] The present application further provides a straw attaching method, wherein the straw is moved onto the packaging container 3 by moving the execution end 121 of the moving device 1;

[0085] Within a predetermined time, the actuating end 121 presses the straw onto the packaging container 3 , and within the predetermined time, a contact surface 123 between the actuating end 121 and the straw generates relative movement with respect to the movement of the packaging container 3 .

[0086] The straw sticking method provided in the present application generates relative movement between the execution end 121 of the shifting device 1 and the straw in the movement direction of the packaging container 3, which means that the control accuracy of the shifting device 1 and the conveying device for transporting the packaging container 3 can be lower, thereby reducing the cost of the entire equipment.

[0087] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A straw-moving device, comprising a driving device (2) and a moving device (1), wherein the driving device (2) is used to drive the moving device (1) to move the straws located on the first station (41) of the rotating drum (4) to the packaging container (3), characterized in that: The driving device (2) drives the finger (12) to move the straw to the surface of the packaging container (3) and maintain contact with the straw, so that the straw and the packaging container maintain a predetermined pressing time. During the pressing time, the execution end (121) of the finger (12) and the contact surface (123) of the straw generate relative movement in the movement direction of the packaging container (3). The moving device (1) includes a bracket (11), and the bracket (11) includes a frame (110) for connecting with the driving device (2). The contact surface (123) is formed on the surface of the execution end (121) facing the packaging container (3), and the contact surface (123) is a plane and parallel to the axis of the first rotating shaft (13). The finger (12) includes a connecting end (120) connected to the first rotating shaft (13); the length of the projection on the horizontal plane of the line connecting the first rotating shaft (13) and the actuating end (121) away from the end surface (122) of the first rotating shaft (13) is Lmin-Lmax; in, L min =L o +(V′ f -V′ c )t; α＝2π / n； Lo is the length of the projection on the horizontal plane of the line connecting the finger (12) from the first rotating shaft (13) to the first working position (41) on the drum (4); R is the radius of the drum (4); e is the depth of the station for transporting the straw on the drum (4); n is the number of workstations on the drum (4); Vc is the movement speed of the packaging container (3); Vf is the movement speed of the finger (12); V′c is the component of Vc in the X direction; V′f is the component of Vf in the X direction; t is the shortest time required for the finger (12) to press the straw onto the packaging container (3), which is 150ms-170ms; The X direction is the direction of the line connecting the shortest distance between the end face of the execution end (121) and the first rotating shaft (13) within time t.

2. The pipe-pulling device according to claim 1, wherein: The toggle device (1) further comprises: A finger (12) is rotatably mounted on the bracket (11) via the first rotating shaft (13); an elastic member (14) is provided between the finger (12) and the bracket (11); the elastic member (14) is used to provide the finger (12) with a force in a direction of moving the straw toward the packaging container (3).

3. The pipe-pulling device according to claim 2, wherein: in, The connecting end (120) and the executing end (121) are arranged in a Z shape.

4. The pipe-pulling device according to claim 1, wherein: The size of the contact surface (123) along the direction of the first rotating axis (13) is smaller than the thickness of the finger along the direction of the first rotating axis (13).

5. The pipe-pulling device according to claim 1, wherein: The surface roughness Ra value of the contact surface (123) is no greater than 1.6 μm.

6. The pipe-pulling device according to claim 2, wherein: The bracket (11) further includes at least two mounting blocks (111) arranged on the frame body (110); Wherein, each of the mounting blocks (111) is provided with a mounting groove for mounting the dial finger (12), and the elastic member (14) is provided between the mounting groove and the dial finger (12) mounted in the mounting groove.

7. The pipe-pulling device according to claim 6, wherein: The mounting block (111) is provided with a first mounting hole for passing through the frame (110), and a threaded hole for fixing the mounting block (111) on the frame (110); the first mounting hole is communicated with the threaded hole, and a bolt passes through the threaded hole and abuts against the frame (110) to fix the mounting block (111) on the frame (110).

8. The pipe-pulling device according to claim 7, wherein: The elastic member (14) is made of polyurethane, and a second mounting hole for mounting the elastic member (14) is provided on the mounting groove; Alternatively, the elastic member (14) is a spring.

9. The pipe-pulling device according to claim 2, wherein: The driving device (2) comprises: A base (21), a second rotating shaft (22) mounted on the base (21) and rotatable around its own axis; an eccentric wheel (23), the eccentric wheel (23) being mounted on the second rotating shaft (22), and the axis of the eccentric wheel (23) being parallel to and not overlapping with the axis of the second rotating shaft (22); a mounting seat (24), the mounting seat (24) being rotatably sleeved on the outer side of the eccentric wheel (23) around the axis of the eccentric wheel (23), and the mounting seat (24) being used to be connected to the bracket (11); a limiting assembly (25), the limiting assembly (25) being mounted on the base (21) and being used to cooperate with the mounting seat (24) to limit the movement trajectory of the mounting seat (24); The axis of the second rotating shaft (22) is parallel to the axis of the first rotating shaft (13).

10. A tube-applying machine, characterized in that: The invention comprises a pipe removal device as described in any one of claims 1 to 9.

11. A method for attaching a tube using the tube-pulling device according to any one of claims 1 to 9, characterized in that: The following steps are included; The straw is moved onto the packaging container (3) by using the execution end (121) of the moving device (1); Within a predetermined time, the execution end (121) presses the straw onto the packaging container (3), and within the predetermined time, the contact surface (123) between the execution end (121) and the straw generates relative movement in the movement direction of the packaging container (3). The contact surface (123) is formed on the surface of the execution end (121) facing the packaging container (3), and the contact surface (123) is a plane and parallel to the axis of the first rotating shaft (13).

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